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[sup 27]Al([ital d],[sup 3]He)[sup 26]Mg reaction at 29 MeV

Journal Article · · Physical Review, C (Nuclear Physics); (United States)
; ; ; ; ; ; ;  [1];  [2]
  1. Institut de Physique Nucleaire, Boite Postale No. 1, 91406 Orsay Cedex (France)
  2. Department of Physics and Astronomy, University of New Mexico, 800 Yale NE, Albuquerque, New Mexico 87131 (United States)
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The [sup 27]Al([ital d],[sup 3]He)[sup 26]Mg reaction has been investigated at 29 MeV incident energy. Observations using a split-pole magnetic spectrograph have been made of 65 levels of [sup 26]Mg in the range of excitation energy between 0 and 9.7 MeV. These levels can be identified with the known states of [sup 26]Mg, which by other techniques have been assigned excitation energies with precisions of 3 keV or better. Information about the orbital angular momentum (with associated conclusions about [ital J] and [pi]) and the single-nucleon spectroscopic factors of about 40 of these [sup 26]Mg levels have been obtained through distorted-wave Born approximation (DWBA) analyses of measured angular distributions. Eight levels which are populated through the pickup of a [ital l][sub [ital p]]=1 proton have been observed at [ital E][sub [ital x]]=6.878, 7.694, 7.824, 8.050, 8.902, 9.042, 9.239, and 9.618 MeV. The two most strongly excited of these levels ([ital E][sub [ital x]]=7.824 and 9.042 MeV) were attributed in a previous study of the same reaction to the population of 1[ital p] hole states. The observed angular distributions of two [ital J][sup [pi]]=6[sup +] levels are reproduced with [ital l][sub [ital p]]=4 DWBA calculations which assume [ital g] components in the ground state of [sup 27]Al. The excitation energies and spectroscopic factors for positive parity states are compared with the results of a recent, complete [ital sd]-shell space, shell-model calculation. New spectroscopic information is extracted from this comparison and from the comparison of the present results with previous knowledge.

OSTI ID:
6330115
Journal Information:
Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 48:1; ISSN 0556-2813; ISSN PRVCAN
Country of Publication:
United States
Language:
English

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Related Subjects

663110* -- General & Average Properties of Nuclei & Nuclear Energy Levels-- (1992-)
663440 -- D-
T-
& He-induced Reactions & Scattering-- (1992-)
663530 -- Nuclear Mass Ranges-- A=20-38-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALKALINE EARTH ISOTOPES
ALUMINIUM 27 TARGET
ANGULAR DISTRIBUTION
ANGULAR MOMENTUM
BORN APPROXIMATION
CHARGED-PARTICLE REACTIONS
DEUTERON REACTIONS
DIRECT REACTIONS
DISTRIBUTION
DWBA
ENERGY LEVELS
ENERGY RANGE
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
HELIUM 3
HELIUM ISOTOPES
ISOTOPES
LIGHT NUCLEI
MAGNESIUM 26
MAGNESIUM ISOTOPES
MATHEMATICAL MODELS
MEV RANGE
MEV RANGE 10-100
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
PARITY
PARTICLE PROPERTIES
SHELL MODELS
SPECTROSCOPIC FACTORS
SPIN
STABLE ISOTOPES
TARGETS
TRANSFER REACTIONS